PM5347 datasheet(76/302 Pages) PMC

76 / 302 page

PM5347 S/UNI-PLUS

DATA SHEET

PMC-941033

ISSUE 6

SATURN USER NETWORK INTERFACE PLUS

PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE

BIP-24/8 errors may be continuously inserted under register control for

diagnostic purposes.

Line RDI Insert

The Line RDI Insert Block controls the insertion of line remote defect indication.

Line RDI insertion is enabled using the TLRDI input, or register control. Line RDI

is inserted by transmitting the code 110 (binary) in bit positions 6, 7, and 8 of the

K2 byte contained in the transmit stream.

Line FEBE Insert

The Line FEBE Insert Block accumulates line BIP-24/8 errors (B2) detected by

the Receive Line Overhead Processor and encodes far end block error

indications in the transmit Z2 byte.

9.13

Transport Overhead Insert Port

The Transport Overhead Insert Port allows the complete transport overhead to

be inserted using input TTOH, along with the transport overhead clock,

TTOHCLK, and the transport overhead frame position, TTOHFP. The transport

overhead clock, TTOHCLK, is nominally a 5.184 MHz (STS-3c/STM-1 mode) or a

1.728 MHz (STS-1 mode) clock. The transport overhead enable signal,

TTOHEN, controls the insertion of transport overhead from TTOH.

The state of the TTOHEN input determines whether the data sampled on TTOH,

or the default overhead byte values (shown in Figure 7 and Figure 8) are inserted

in the transmit stream. For example, when configured for STS-3c (STM-1) mode,

a high level on TTOHEN during the section user channel (F1) bit positions

causes the eight values shifted in the TTOH input to be inserted in the F1 byte

position in the transmit stream. A low level on TTOHEN during the section user

channel bit positions causes the default value (0x00) to be inserted in the

transmit stream.

During the H1, H2, B1 and B2 byte positions in the TTOH stream, a high level on

TTOHEN enables an error insertion mask. While the error mask is enabled, a

high level on TTOH causes the corresponding bit in the H1, H2, B1 or B2 byte to

be inverted. A low level on TTOH causes the corresponding bit in the H1, H2, B1

or B2 byte to be transmitted uncorrupted.

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